watchdog timeout ???

[Lowell Gilbert]

Peter Ulrich Kruppa <root at pukruppa.de> writes:

> Our Samba server (on a 4.8 -RELEASE machine) frequently freezes
> with these error-messages:
> 
> rl0: watchdog timeout
> ahc0: Timeout SCB already complete. Interrupts may not be
>       functioning
> 
> 
> What does this mean?
> 
> Thanks for all answers, this is quite important.

The log messages both mean that interrupts aren't being detected
properly.  Try replacing the Ethernet card with one of better quality;
the RealTek cards have known problems with keeping track of interrupt
status.  They are not advisable for server use in any case.